Police said a Keene woman was arrested in connection with a fatal hit-and-run accident that killed a bicyclist. Tracy A. Burroughs, 41, was arrested Saturday on charges of negligent homicide and leaving the scene of a fatal accident. Keon E. Ioannou, 48, was found dead by medical personnel who responded to the accident on Route 101 shortly before 2 a.m., police said. Burroughs was being held in lieu of $25,000 bail, and is scheduled to appear in court Monday.